Singlet Oxygen and Osmotic Stress
Blog, Plant Physiology, Plant Physiology: On The InsideSome experimental systems aimed at understanding the effects of drought on plants have incorporated cell-impermeable high molecular weight polyethylene glycol (PEG) to mimic the osmotic component of drought stress. The use of PEG showed that drought stress response could be separated into components…
The role of the seventh subfamily of cytoplasmic receptor kinases in plant immunity revealed by genetics
Blog, Plant Physiology, Plant Physiology: EditorialsSource: Institute of Genetics and Developmental Biology Published: 2018-07-09 http://www.cas.cn/syky/201807/t20180704_4657120.shtml Translation by Google
Pattern recognition receptors (PRRs) on plant cell membranes recognize some of the conserved molecular patterns derived from pathogens that…
A new mechanism for plant immune pathways discovered by genetics
Blog, The Plant Cell: NewsSource: Institute of Genetics and Developmental Biology Published: 2018-07-05 http://www.cas.cn/syky/201807/t20180704_4657121.shtml (Translation by Google Translate)
Plants sense the presence of pathogens through pattern recognition receptors (PRRs ) located on the surface of the cell membrane to…
The Phytophthora RXLR effector AVR3a12 suppresses ER-mediated plant immunity (Mol. Plant)
Plant Science Research WeeklyThe pathogenic oomycete Phytophthora capsici secretes RXLR effector proteins into plant cells to subvert host cell machinery and facilitate disease. Several RXLR effector proteins have been characterized to date, however, Phytophthora species encode a vast array of effector molecules that likely target…
Phylogenomics reveals multiple losses of nitrogen-fixing root nodule symbiosis (Science)
Plant Science Research WeeklyThe ability to participate in nitrogen-fixing root nodule symbiosis shows an interesting phylogenetic pattern, with some families showing a large number of nodulating species interspersed with non-nodulating ones, and some families showing only a few nodulating species. A current model suggests that…
Pathogenic Bacteria Use A “Self-Eating” Process to Trick Plants
Research, The Plant Cell, The Plant Cell: In a NutshellÜstün et al. show that pathogenic Pseudomonas enhances the autophagic turnover of proteins in Arabidopsis https://doi.org/10.1105/tpc.17.00815.
By Suayib Üstün and Daniel Hofius
Background: Autophagy and the proteasome are the major pathways for protein degradation in eukaryotes. While the…
Plant exosomes mediate cross-kingdom RNA interference ($) (Science)
Plant Science Research WeeklySmall RNAs (sRNAs) trafficking between host plant and pathogens can occur in a wide range on interactions. Pathogen-produced sRNAs have been shown to suppress host plant immunity, and conversely host plant-derived sRNAs can reduce pathogen virulence by targeting pathogenic genes of the pest. Nevertheless,…
The repetitive effector Rsp3 promotes the virulence of the corn smut fungus Ustilago maydis
Plant Science Research WeeklyThe corn smut fungus Ustilago maydis manipulates maize tissues and cells through the secretion of effectors that modulate host protein activities. In a recent article published in Nature Communications, Ma et al. characterize a highly repetitive effector protein family (Rsp3, repetitive secreted protein…
Opinion: Non-mycorrhizal Plants: The exceptions that prove the rule (TIPS)
Plant Science Research WeeklyMost vascular plants establish in their roots a multifunctional symbiosis with arbuscular mycorrhizal (AM) fungi. Among the 29% that do not host AM fungi are 66-92% of the members of the Brassicaceae family, including some major crops (broccoli, oilseed rape) as well as the model plant Arabidopsis…